HartsfieldâJackson Atlanta International Airport has been the world's busiest airport every year since 2000; with all airports combined London has the world's busiest city airport system by passenger count.
Tension or Temperature. Dogs may shake as a way of relieving tension. If a dog is feeling nervous or uncomfortable in a situation, it might shake the whole body as a way of shaking out tension. This behavior also may function as a means of getting attention from other dogs or people.
If your dog is in pain, chances are he may shiver. Often, the source of the pain is not obvious, and it may require a physical examination or an x-ray. This is why it is important to never underestimate a dog that is shaking. A child rough handling and dropping a dog on the floor may cause spinal injury.